var stack: [String] = []
// Push elements onto the stack
stack.append("Swift")
stack.append("Python")
stack.append("Java")
stack.append("C")
print("Stack after pushes: \(stack)")
// Peek at the top element
if let top = stack.last {
print("Top of stack: \(top)")
}
// Pop elements off the stack
while !stack.isEmpty {
let popped = stack.removeLast()
print("Popped: \(popped) | Remaining stack: \(stack)")
}
print("Stack after pop: \(stack)")
/*
run:
Stack after pushes: ["Swift", "Python", "Java", "C"]
Top of stack: C
Popped: C | Remaining stack: ["Swift", "Python", "Java"]
Popped: Java | Remaining stack: ["Swift", "Python"]
Popped: Python | Remaining stack: ["Swift"]
Popped: Swift | Remaining stack: []
Stack after pop: []
*/
